Trustees



(Na Model.) v

A. VAN WAGENEN.

NAILING MACHINE.

Patamd June 27,1882.

UNITED STATES PATENT OFFICE.

ALBERT VAN VVAGENEN, OF BOSTON,1VIASSAOHUSETTS, ASSIGNOR TO GOR- DON MCKAY, OF `NEWPORT,' RHODE ISLAND, AND JAMES W. BROOKS, OF OAMBRIDGE, MASSACHUSETTS, TRUSTEES.

NAlLlNG-MACHINE.

SPECIFICATION form'mg part of Letters Patent No.`260,142, dated. June 27, 1882.

Application filed May 12, 1882. (No model.)

To all whom, it may conccrn: c

Be it known that I, ALBERT VAN WAGE- NEN, of Boston, Suffolk county, State of Massachusetts, have invented an Improvement in Nailing-Machines, of which the following description, in connection with the accompanying' drawings, is a specification.

My invention, relatin g to a nailing-machine for bootandshoe work,is em bodied in anailing- Io machine in which the horn or support for the stock being nailed is (lepressed by the action of the nailing mechanism after a nail or fastening has been driven, so as to permit the stock thus released from between the nose or nail-driving passage and horn to -be fed into proper position to receiveanother fastening; and the invention has for its object to enable the amount of depression of the horn to be Controlled by the operator, as is necessary in zo Operating upon stock of different thickness.

In another application I have shown the result accomplished by a variable intermediate device between the horn-depressing meohanism and the horn or its supporting mechanism, the 2 5 said intermediate device consisting of a wedgeshaped block actuated by the foot of the operator by means of a treadle connected with it. In. this present invention the mechanism which automatically depresses the horn'while the feed of the boot or shoe takes place is shown as a lever actuated from a suitable cam or eccentrio on the main shaft, which also aotuat'es the nail-drivin g, stock-feeding, and other mechanisms by which the fastening is properly introduced into the stock; and the invention consistsin the combination, with the said horn, and also with it and the said depressingmechanism, of an annular cam surrounding the said horn or its supporting-shaft, the said cam 4o'being adapted to be rotated by the'operator when it is desired to vary the distance that the tip of the horn is to be depressed below the nose or nail-driving passage.

As hereint shown, the base or supportingshaft of the horn is provided with a collar or shoulder fixed thereon, and acted uponby a spring or .counter-weight to press the horn against the stock. An annular cam-seathaving aninclined surface is mounted upon the said collar so as to be free to move longitudinally with the horn, but be prevented from rotating therewith. rEhe said cam-seat has a spiral or inclined surface co-operating with a corresponding surface of an annular cam loose upon the said horn-supporting shat't, and provided with a suitable handle to enable it to be rotated about the said horn relativel y to the said seat, and also with a looking device to hold the cam in adjustable position. By Vrotating the said cam on its seat the top of the cam which is engaged or struclr by the horndepressing device is'raised or lowered with relation to the collar'fixed upon the horn, owing to the spiral or inclined engaging surfaces of the cam and seat.

The horn-deprcssing device, which'acts upon the horn through the intervention of the said annular cam or cams carried directly by the horn-shaft, has a uniform movement derived from the nail-driving mechanism, and it will be seen that its effect upon the 'horn, or the actual distance `that it will depress the horn from the nose or nail-driving passage, will depend upon the distance of the top of the said cam from the fixed collar or shoulder on the horn, and consequently upon the position of the said cam on its seat, which will be regulated by the operator from time to time,,as required.

Figure 1 shows, in side elevation, a sufiicient portion of a nailing-machine to illustrate this invention; and Fig. 2 a, sectional detail on line w x,Fig. 1.

The nail-passage or nose a and the mechanism for supplying` and driving the fastenings and feeding the stock, all operated by the main shaft b, may be of any suitable or usual construction, they forming no part of the present invention.

In the operation of the machine the stock has a feeding movement once at each rotation of the main shaft b, which is provided with an eccentric, c, or equivalent, acting through the connecting-rod d upon one arm of a lever, c, pivoted at f upon the frame-work of the machine, the said parts constituting the horn-depressing mechanism, and being operated once at each rotation of the shaft b to depress the horn, so as to release the stock from between it and the nose a, and thus permit the stock to be fed by the proper mechanism.

The horn proper, g, mounted upon abase portion or shaft, h, having alongitndnal and rotary movement in guidesi upon the framework, is provided with a collar or shoulder, lc, fixed thereon at theproper point, which is acted upon by a spring, m, or equivalent, tendingto press the horn toward the stock between it and the nose a.

Upon the collar k is mounted an annular cam-seat, a, provided with a projection, o, (see Fig. 2,) which engages a slot, 2, in the framework, thus preventin g the said cam-seat from rotatingwith the horn,butpermitting it to accompany the said horn in its lon gitudinal movement. The upper surface of the said cam-seat is made spiral or inclined, as shown, and reoeives upon it the cam 1;,having acorresponding spiral surface,and provided with ahandle, to enable the operator to rotate it upon the shaft h and seat a. By rotating the camp in the direction of the arrow thereon the height of its top above the collar h will be increased. The horn-depressing lever c acts upon the top of the said cam 1), and through it upon the seat n and collar 7a, to depress the horn. The said lever e always derives the same amount of movement from the main shaft b; so it will be seen that to vary the distance which the horn g is to be depressed below the nose a the operator has to depend upon the position of the top of the cam 1). The farth er the said cam is moved in the direction of the arrow the higher its surface and the greater the extent of depression of the horn.

The engaging surfaces of the cam p and its seat a may be serrated or roughened to prevent the rotary movement of the former when the lever e is acting upon it. The cam-seat is shown as toothed or serra-ted at its periphery, to be engaged by a looking device, n, shown as a lever acted upon by a spring, shown just above it.

The spring m acts to press the horn against the stock when the end of lever c is raised from cam p, and at such time the operator can rotate the cam p by means of the handle r, the machine being then in motion.

The cam p will be moved in the direction of the arrow (see Fg. 1) when it is desired to depress the horn to a lower point when the machine is working upon thick stock, and in the opposite direction when the machine is to work on thinner stock, the operator being able to judge from the action of the machinethe proper position for the said cam.

lt is obvious that a suitable rod or bar, actuated by the shaft b or other portion of the driving mechanism, may operate directly upon the cam p without the interposition of the lever, such a bar then constituting the horn-depressing mechanism.

A treadle, t, connected with the horn by a link or chain, n', serves to depress the said horn for the pnrpose of applying or removing a shoe, but is independent in operation of the horn-depressin g mechanism before described.

I claim- 1. In a mailing-machine, the combination, with the horn and horn-depressin g mechanism, of a rotary cam interposed between the said horn and its depressin g mechanism,and adapted by its change of position to regulate the extent to which the horn is depressed below the nail-tube, substantially as described.

2. The horn and annnlar cam-seat thereon, combined with the annular rotary cam co-operatingwith the said seat, substantially as and for the purpose described.

3. The horn, guides to direct it in its vertical movement, the cam-seat and movable cam adapted to rise and fall with the said horn, and a looking device to hold the cam and camseat in adjusted position, snbstantially'as and for the purpose set forth.

4. The horn having Vertical motions, and the annular cam-seat, and the annular cam p, mounted thereon, combined with projection o, to prevent the rotation of the cam-seat with the horn, substantially as described.

In testimonywhereof Ihave signed my name to this specification in the presence of two subscribing witnesses.

ALBERT VAN WAGENEN.

Witnesses J os. P. LIVERMORE, W. H. SrGsToN. 

